Apparatus for making sunk stampings.



Patented May 9, 1916.

2 SHEETS-SHEET] y1/wrm? nd/ffy' /ff//'z rra/m15 y A. KURZ.

APPARATUS Foa MAKING SUNK STAMPINGS.

.APPUCATON ULEB DEC. 10,1913.

THE coLuMmA PLANOURAPH co.. wAsuxNuToN, u. c.

A. KURZ.

APPARATUS FOR MAKING SUNK STAMPINGS.

APPLICATION FILED DEC. l0. T913.

1,182,573. Patented May 9,1916.

2 SHEETS-SHEET 2.

TME COLUMBIA PLANOGRAPH 0., WASHINGTON, D. c.

UFEUE.

ALWINKURZ, ror BERLIN, GERMANY, '.AssIeNoa To BAU- UND nANnnLsUN'rEB- l NEHIVIUNGEN e. M. BQII, or BERLIN, GERMANY.

APPARATUS ron MAKING 4SUNK sTAivIrINGs.

` Specicatondf Letters atent.

' Patented May 9,1916.

Application area neelembe'rio, 1913. serial No.fso5,7eo.

To all/whom t mag/concern: g j

Be 1t known that l, `ALWIN Inma, en-

graver',`subject of Germany, residing aty No. f

70 Friedenstrasse, inthe city of Berlin, German Empire,have invented new and useful Improvements kvin Apparatus V.for Making Sunk Stampings; and I do hereby declarethefollowing to be, afull, clear, and,v

exact description of the same.y

My invention relates to themechanical production of metallic printing plates and has for its object to. impart tothe,cha-rac-` ters or the like which lare thus produced the ,appearance of work cut by hand.,

Metallic printing `plates p 'foduced by mechanicalmeans, as is lwell known is eff fected` by means of dies or letter punches,

which-bear the character (for ,instance aA in punching" the individual ycharacters in succession according to the method forming the `'subject of the presentinvention, is to displace the j n'inting plate or `stamping 'die' laterally through a distance ycorres'pondmg with that vto, which they charactersto .be stamped 1 project sidew'ise beyond'a ymiddle plane i y(preferablyv the middle plane .ofy the punch providedy with such characters). Consequently, the distancebetw'een two ad-y jacent characters will're'sult from the A,sum of j the distances j to which `two, successive characters project, facing eachr other, from the said rmiddle plane, plus thek `free space left between the two characters;

The newmethod of'operati g affords the possibility of using dies ofequal ,Widthforf the various characters` even when ytheseladgter are asymmetrical, and yneverthelessfof maintaining an exactly uniformdistance be-r tween' the separate characters. f V i To enablerthe relative displacement ybetween thefprinting platey and stamping die to be properly yeffectedv `in `accordance'with the invention, lthe apparatus used forstampwith relationy by means of the yhandle d.

" ingy preferably equipped with adjustable stops, which determine the proper relative positions of, the printing plate and stamping die at the moment the character is being stamped. i

` The annexed drawing illustrates one formy ofl apparatus suitable for carrying out the invention. y Y Figure l is a front 'elevation and Fig.

a longitudinal section of the apparatus,

while Fig.y 2, is a plan of a rack slide`the press spindle beingr shown in section. Figs.

l and represent the adjusting ,devicein` section and end elevation. Figs. 6, Tand 8 yare` perspective views of detached parts of the adjusting device..y Fig. Qshows adetachable stop in the preferred form and F ig.. 1K0 shows a stop` to be fastened` to the slide for .coperating with. the detachable stops.k F ig. llk isa diagram illustrating how the detachable stops `ofthe adjusting vdevice arey determined according to the kind of,

character `r,toy be stamped.

The base plate can be pushed to and fro, ,y

transversely in thelower part of the yoke a, Y e j In the4 upper part of"V the yoke a the slide c runs at right anglestothe ydirection ofy movement` of the base ,plate 7). The'press spindle e, carrying the ram f,can be moved upand down in the` sa ,',slide c rotating the ball-tipped arm s. ,y The downwardu movement of the spindle e.y

forcesfthegtype k, which `is inserted in a guide g, `into the metallic printing plate c' whichis secured on the base plate The guide g is screwed fast on the slide c insuch a position that the axis of the spindle e` lies" in the central plane of the guide. The adjusting device ,fory insuring the correct distance between the characters to be stamped consists in the example shown of a Sliding member mnthe foot member m1 of which is `adapted to be displaced in thev groove n of aonf theyoke a in a direction parallel to the direction of movement `of the slide c. This sliding member m carries a mandrel ojon which are slipped the stops 22. Qngthe slide c yis Iscrewed the stop g against` which the member m is pushed vat the beginning ofthe stamping operation iny such` a wayj that the stop Q bears against the outermostwasher p slipped ,on the mandrel 1o. This done, the member m'is clamped by meansof the eccentric Z; Thiseccentric pin]y is lodged inV the .befwrhe evdssn m2' basane@ which the Afoot m1 engages in the vsliding member m. Consequently, by turning the Vhandle'Z1 of the eccentric, the foot m1 kand the member m are pressed firmly against the guide in the yoke a. It may be understood that the mandrel 0 could be attached to the slide c and the stop Q to the sliding member m.' AfterVV each operation of stamping a character in the plate, the washers p de? termining the distance between the impressed character and the one next following are drawn off the mandrel, and the slide c is displaced by a distance equal to the intermediate space thus formed.

To enable the depth of the impression ofY the type in the vmetallic printing plate to be accurately fixed, a scale is provided on the spindle e and a pointer u on the slide c.

Y For the prevention of errors, 'a loose pointer 'v is arranged over the scale t and is set against that part ofthe scale'to whichtlie pointer u is intended to be turned. The slide c is moved by means of pinions which engage in the racks y provided on theV 'the base plate o andA by a pointer III on the yoke a. When in the rightrposition the base plate is clamped by means of the eccentric IV;

The thickness or width ofthe metal washers p isy determined in the following manner: ',Ihe individual characters, letters for example, are cut in the knownv manner on the end surface of a type bar it. According totheA kind of letter, the individual parts of same project laterally for a certain distance sidewise from an imaginary. central plane, for instance the Ycentral plane ofthe type bar. As shown in F ig'll, the letter B for example Vwould project sideward from the dotted line indicating the central plane, leftward for the distance l and Vrightward for the distance 1. vThe letter E extends leftward for the distance 2 and rightward for the distance 2 in a lateral direction,

and so on. If it be desired to stamp the letters B and E in succession, the die is pushed from the central line of the letter B as far as the central line of the letter E. The distance movedis the sum of the two adjacent projections, that is to say l and 2, plus the free space s between the two letters. If now the washers be of such a thickness as is equal .to the lateral projection of the letter toward the one side, plus half the width ofthe space, then the distances separating the individual characters can be fixed by arranging thesewashers in successive order. If, for instance, the work BERLIN is to be stamped in the plate, the' grouping of' washer 2'equal to 2y plus 1,1sa5ve the washers according to Fig. 11 is as follows: For the first impression, the pressure member must be in position over the central plane of the letter B;` for the next impression it must be over the central plane of the letter E, and so on. Therefore, for the first letter of the word, the right hand washer must be inserted, and the left hand washer for the final letter, While for the intermediate letters both washers must be slipped on. Hence, in Fig. '11,.the 'washer 1 corresponds to the right half of the letter B. Then follow the washers 2 to 9, two each for the letters E R L I, and the washer 10 for the left half ofthe letter N, the thick` ness of the washer l being, accordingpto theV above statement, equal to l plus SE# that of 2v that of Washer s and so on.

is eHected as follows! The slide c is moved so that the punch is exactly over that part of the-printing .plate i where the letterv B is to be stamped. The ten washers are slippedV onk to the mandrel o of the sliding member m in the manner already explained, so that the washer l isinfron't, on the right hand side in Fig. 2. The member m is then moved so far that the washer 1 bears against the stop g, and is clamped in this position.v The type bar carryingl the letter B is ,thenY inserted into the guide g and thefletter'B is stamped 1n the plate by turning the spindle e.. The two washers l, 2 are then'taken off, and the slide c is moved so that the stop g Vbears against the washer 3, A whereupon the type bar bearing the letter B isreplaced in the guide g by the bar provided withfthe` letter E, and so on.

What I claim and desire to secure by Letters Patent of the United States is l.y In an apparatus for makingv sunk stampings, the combination of a support; an adjustable member member carried on said support; and loose detachable pieces interposed between said members.

2 In an apparatus for making 4sunk stampings, the combination of a support; an adjustable member and a type operatlng membery carried on said support; and pieces interposed between said members andl corresponding in width to distances between a given line of the letter and the line midway between such letter and the adjacent 'letter of the respective letters to be` stamped. l

3. Inll an apparatus for making sunk stampings, the combination of a base; a support held thereover; a slide on said support and adapted to guide type; means for pressand a type operatingk IOS ing the type toward the base; a sliding member adjustably secured to the support; and a plurality of pieces interposed betweensaid member and slide.

4. In an apparatus for making f sunk stampings, the combination of 'a base; a support held thereover; a slide'on said support and adapted to guide type; means for pressing the type toward the base; a sliding member adjustably secured to the support; and a plurality of pieces interposed between said member and slide, and `corresponding respectively in width to the distances between the median line oi' the letter and the line midway between such letter and vthe adjacent letter of the letters to be stamped.

5. In an apparatus for making sunk stampings, the combination of a base; a support supported over said base; a slide slidably mountedfon said support and provided with a guide for receiving a type; means for pressing the type toward said base; `a sliding member adjustably supported on said support; a washer carrying device on said member; and washers on said device between said member and slide and corresponding in width respectively to the distance between the center of resistance yof respectively the types and the point midway between the types and the adjacent type.

6. In an apparatus `for making sunk stampings, the combination of a yoke; a base late supported below the yoke; a slide slida ly mounted on the yoke and over the base plate; a guide secured to the lower part of the slide; a plurality of types adapted to be interchangeably received in the guide; means carried by the slide for press- Copies of this patent may be obtained yfor ve cents each,l by addressing the Commissioner of latents, y

'operating means on one of said parts; ,and means for llmitmg the movement between ,A

said partsto increments equal respectively to the variable., distances between the central planes of the types to be stamped.

f 8. Apparatus for making sunk stampings in printing plates by means of type" 'bars which are provided with thecharacters to be impressed in the plate comprising 1n Y combination a slide movable relatively to the printing plate which slide carries a guide for the type bars, means for displacing the type bar perpendicularly to the plate, a sliding member which is adapted to be rdisplaced parallel with the direction of movement oi' the slide, and detachable stops for determining the relative position of the slide amd' the said sliding member, substantially as set forth.

In testimony whereof, I have signed my name to this specication in the presence of two subscribing witnesses. Y

ALWIN KURZ. Witnesses:

HENRY I-IAsrER, n WoLDnMAR HAUPT.

Washington, ILE. 

